Year	Total
1971	58010000
1972	65010000
1973	100000000
1974	140000000
1975	151000000
1976	148000000
1977	155000000
1978	167000000
1979	171000000
1980	223000000
1981	228000000
1982	290100000
1983	283100000
1984	522100000
1985	567100000
1986	737100000
1987	718100000
1988	551100000
1989	541100000
1990	728100000
1991	665100000
1992	701100000
1993	704100000
1994	747100000
1995	780100000
1996	774100000
1997	664100000
1998	580100000
1999	958200000
2000	761100000
2001	1057000000
2002	1383000000
2003	1428000000
2004	1262000000
2005	1539000000
2006	1719000000
2007	1904000000
2008	2206000000